Reinforced paper.



A. WENDLER.

REINFORCED PAPER.

APPLICATION FILED NOV- 30, 1915.

I 1 9?,3 I 51 I. Patented Sept. 5, 1916.

* :1 ran starts PA UWWMW ALEXANDER WENDLER, 01E BERLIN-CHARLOTTENBURG, GERMANY.

REINFORCED PAPER.

meters.

Specification of Letters Patent.

Patented Sept. 5, rate.

Driginal application filed July 20, 1969, Serial No. 508,615. Divided and this application filed November l ment in lEteinforced Paper, of which the following is a specification. 1 v

a This invention relates to reinforced paper of the kind consisting of two sheets or plies secured together by suitable mean'sand having a. reinforcement {secured between the sheets or plies, and is a division of my pending application No. .508,615,'-"filed July. 20,-

-The objects of the invention are to pro- .vide a paper of this kind whichis reinforced by means of threads or strands. extending longitudinally and transversely of the paper to reinforce the same against strains acting" either substantially lengthwise of the paper or substantially at right angles to the length thereof, and in which the strands are .so arranged thatwthe longitudinal "strands will support the, transverse strands.

In the accompanying drawings: Figure 1 is a face view of the paper embodying the invention, having a portionof the upper ply or layer of paper broken away to show the reinforcement. Fig. 2 is a similar view of paper having a slightly modified form of reinforcement.

A and B represent two sheets or plies of paper, paper-board, or the like, between which the reinforcement is held. These two sheets or plies may be secured together in any suitable manner, for example, by means of an adhesive or glue which also serves to hold the reinforcement in place between the two plies of paper. r i

The reinforcement includes two continu' ouslongitudinakedge strands C C which are arranged adjacent to the side edges of the paper,and one or more continuous transversestrands D, three being shown in the embodiment of the invention shown in the drawings, which are wound around the'edge strands G C from side to sideof the pa er;

These strands are arranged asnearly c osssubjected will be resisted thereby. The. longitudinal and lateral reinforcing strands may be made of any suitable flexible ma.--

terial, such as cord, twine, or the like.

Serial No. 64,237.

-The paper is strengthened longitudinally thereof by means of a plurality of intermediate, continuous longitudinal strands 1E arranged at intervals between the longitudlnal edge strands. These intermediate strands may be so arranged that the transverse strands pass under and over the same n the same manner as they'passaround' the edge strands, see Fig. 1, or they may be placed. beneath or above the transverse strands and so that the transverse strands extend as nearly as possible straight lines.

In the manufacture of the paper, two plies of paper. are passedcontinuously over rolls and glue or other adhesive is applied to one.

or both sheets. The two sheets then pass on to pressure rolls or analogous devices which press the two sheets together. The reinforcement is passed between the sheets and is held in place between the two' sheets by The reihforcement is made' the adhesive. by passing the longitudinal edge strands into the pressure rolls or analogous devices and winding the transverse strands around the edge strands by means of bobbins or spools passing from one edge strand to the other and around the Same, the transverse strands being supported by the edge strands.

The intermediate longitudinal strands may be-passed-between the pressure rolls either between the transverse strands,'as shown in Fig. 1, or beneath or above the same to produce the paper-shown in Fig.2.

Paper of the kind described has the advantage that it is reinforced in the direction in which it is usually subjected to strains, namely in the longitudinal and transverse directions." The reinforcement is not expensive to make and has the advantage that the strands support each other and held in place by the longitudinal edge without making it necessary to knot or interweave the same. This paper has the fur-' ther'advantage that it can be economicallyused in cases where the strains are'in crosswise and lengthwise directions, forexample in paper bags, where the, strains are lengthwise and clrcumferentlally of the bag, and

' where large sheets of the paper are required,

involving much waste in cutting and making impracticable to obtain large sheets for such purposes.

. I claim as my invention:

1. Reinforced paper provided with an incorporated non reticular, non interwoven reinforcementcomprising longitudinal strands near'the side edges of the paper, a continuous strand which passes around and connects said longitudinal strands and forms a plurality of transverse strengthening elements in the paper, and intermediate longitudinal strands arranged at intervals between said edge strands and strengthen- .ing the paper lengthwise thereof, the transverse strands extending in directions nearly crosswise of the paper, and said longitud1- nal and transverse strands being retained in fixed position by the paper. t

2. Reinforced paper T comprising two sheets ,of paper secured together by an adhesive and having a. non-reticular, non-interwoven reinforcement secured between the two sheets, said reinforcement comprising.

longitudinal edge strands stretched adjacent to the side edges of the paper, a continuous strand passing around said edge strands and forming a plurality of transverse strengthening ele'ni'ents extending from side to side of the paper nearly crosswise thereof, and intermediate longitudinal strands arranged at intervals between said edge strands and strengthening the paper lengthwise thereof,-the transverse and longitudinal strands being retained in fixed position relatively to each other and the paper by the connected sheets of paper.

3. Reinforced paper provided with an incorporated non-reticular, non-interwoven reinforcement comprising longitudinal edge strands near the side edges of the paper, a strand which passes continuously from side to 'side of said reinforcement and forming transverse strengthening elements in the and intermediate longitudinal strands arranged at intervals between said longitudinal edge strands andstrengtheningthe paper lengthwise thereof, said trans- 'verse strand-passing around both the longitudinal edge and intermediate strands and extending ilearly crosswise of the paper, and the. longitudinal and transverse strands crossing each other nearly at right angles and being retained in fixed position by the paper.

Witness my hand, this 25th day of October, 1915.

ALEXANDER WENDLER. Witnesses: HENRY .Hssrmz,

ARTHUR Sonnormrm. 

